第一版demo

.gitignore

@@ -6,7 +6,7 @@
 
 node_modules/
 package-lock.json
-
+run.js
 
 # Thumbnails
 ._*

Readme.md

@@ -8,6 +8,9 @@
 ```
 
 
+![demo1.png](./img/demo1.png)
+
+
 ## 安装
 ```bash
 npm i -g bash-calendar

calendar.js

@@ -0,0 +1,55 @@
+/**
+ * {日历}
+ * @author yutent<yutent.io@gmail.com>
+ * @date 2021/11/29 09:59:26
+ */
+
+//获取今年的年份/月份，返回的是数组
+export function getThisYearMonth() {
+  var d = new Date()
+  return [d.getFullYear(), d.getMonth()]
+}
+
+//根据年份获取指定月份天数
+function getTotalDays(year, month) {
+  return new Date(year, month + 1, 0).getDate()
+}
+
+//判断指定年月第一天是星期几
+function getFirstDay(year, month, day) {
+  return new Date(year, month, day || 1).getDay()
+}
+
+//判断指定天数是否被选中
+function isPicked({ year, month, day }, item) {
+  return item.year === year && item.month === month && item.day === day
+}
+
+function getToday() {
+  var d = new Date()
+  return { year: d.getFullYear(), month: d.getMonth(), day: d.getDate() }
+}
+
+//计算日历数组
+export function getCalendarTable(year, month) {
+  var nums = getTotalDays(year, month)
+  var numsFixed = 1 - getFirstDay(year, month)
+  var today = getToday()
+  var list = []
+
+  for (let i = numsFixed; i <= nums; i++) {
+    let day = {
+      day: i < 1 ? '  ' : (i + '').padStart(2, '0')
+    }
+    if (i > 0) {
+      let week = getFirstDay(year, month, i)
+      day.weekend = week === 0 || week === 6
+      day.picked = !!isPicked({ year, month, day: i }, today)
+    }
+    list.push(day)
+  }
+  while (list.length % 6 !== 0) {
+    list.push({ day: '  ' })
+  }
+  return list
+}

index.js

@@ -6,12 +6,90 @@
  * @date 2021/11/26 17:20:02
  */
 
-function print(...args) {
-  args[0] = args[0].padEnd(20, ' ')
-  if (args.length > 1) {
-    args.splice(1, 0, '   -   ')
+import chalk from 'chalk'
+import figlet from 'figlet'
+import { getThisYearMonth, getCalendarTable } from './calendar.js'
+
+const CAL_HEAD = ['日', '一', '二', '三', '四', '五', '六'].map((s, i) => {
+  if (i === 0 || i === 6) {
+    s = chalk.red.bold(s)
+  } else {
+    s = chalk.bold(s)
   }
-  console.log.apply(null, args)
+  return ' '.repeat(4) + s + ' '.repeat(4) + chalk.grey('|')
+})
+const VLINE = chalk.grey('|')
+const DASHED_LINE = chalk.grey('|' + (' '.repeat(10) + '|').repeat(7))
+
+var [year, month] = getThisYearMonth()
+var table = getCalendarTable(year, month)
+var line = 0
+var dateStr = figlet.textSync(`${year} . ${month + 1}`)
+
+function drawDashedLine(start = '', pipe = ' ') {
+  return chalk.grey(start + (pipe.repeat(10) + '|').repeat(7))
 }
 
-print('Hello calendar!')
+dateStr = dateStr
+  .split('\n')
+  .map(s => chalk.grey('| ') + chalk.cyan(s) + ' '.repeat(77 - s.length - 2) + chalk.grey('|'))
+  .slice(0, -1)
+  .join('\n')
+
+console.log(chalk.grey(' ' + '_'.repeat(76)))
+console.log(dateStr)
+console.log(chalk.grey('|' + '_'.repeat(76) + '|'))
+console.log(drawDashedLine('|'))
+console.log(chalk.grey('|') + CAL_HEAD.join(''))
+console.log(drawDashedLine('|', '_'))
+
+// 渲染日历表格
+for (let i = 0; i < 3 * 5 + 1; i++) {
+  let tr = ''
+  for (let j = 0; j < 7; j++) {
+    let tmp = table[line + j]
+
+    if (!tmp) {
+      break
+    }
+
+    if (j === 0) {
+      tr += VLINE
+    }
+    switch (i % 3) {
+      case 0:
+        if (i === 0) {
+          tr += chalk.grey(' '.repeat(10) + '|')
+        } else {
+          tr += chalk.grey('-'.repeat(j === 6 ? 10 : 11) + (j === 6 ? '|' : ''))
+          if (j === 6) {
+            line += 7
+          }
+        }
+        break
+
+      case 1:
+        if (tmp.picked) {
+          tr += chalk.bgRed.whiteBright.bold(' '.repeat(4) + tmp.day + ' '.repeat(4)) + VLINE
+        } else {
+          if (tmp.weekend) {
+            tmp.day = chalk.redBright(tmp.day)
+          } else {
+            tmp.day = chalk.whiteBright(tmp.day)
+          }
+          tr += ' '.repeat(4) + tmp.day + ' '.repeat(4) + VLINE
+        }
+        break
+
+      case 2:
+        if (tmp.picked) {
+          tr += chalk.bgRed(' '.repeat(10)) + VLINE
+        } else {
+          tr += ' '.repeat(10) + VLINE
+        }
+        break
+    }
+  }
+
+  console.log(tr)
+}

package.json

@@ -2,13 +2,15 @@
   "name": "bash-calendar",
   "description": "终端版万年历",
   "version": "0.0.1",
+  "type": "module",
   "author": "yutent <yutent.io@gmail.com>",
   "bin": {
     "calendar": "index.js",
     "cal": "index.js"
   },
   "dependencies": {
-    "chalk": "^4.0.0"
+    "chalk": "^4.0.0",
+    "figlet": "^1.5.2"
   },
   "repository": {
     "type": "git",